Settings for AutoLayout multipli properties in iOS

Method One: Using the three-party framework masonry

[self.loginbtnmas_makeconstraints:^ (Masconstraintmaker *make) {

Make.width.equalTo (self.view.mas_width). Multipliedby (0.3);

Make.height.equalTo (@30);

Make.centerX.equalTo (Self.view.mas_centerX);

Make.top.equalTo (Self.view.mas_bottom). Multipliedby (0.7);

}]; Set a button at 0.7 of the view,

cannot be written as:

Make.top.equalTo (self.view.mas_height). Multipliedby (0.7); Will complain.

Method Two:

If you can do this with storyboard:
1. Drag the top of the imageview to the bottom flush with the superview.
2. Change the mutiplier,1 of align Center y to 4, which is Superview 1/4.

Quote a statement from others

You can understand this, Imageview.top = self.view.bottom*1 is: |
Self.view.bottom |
V |
------------------(1)
^            |
Imageview.top |
Imageview.top = self.view.bottom*0.25, which is multiplied by 0.25 on the above basis, is:

------------> (self.view.top)
(self.view)
------------> Self.view.bottom * 0.25
     ^
Imageview.top

------------> Self.view.bottom * 1